CN2391801Y - Rear driven and two person type bicycle - Google Patents
Rear driven and two person type bicycle Download PDFInfo
- Publication number
- CN2391801Y CN2391801Y CN 99241149 CN99241149U CN2391801Y CN 2391801 Y CN2391801 Y CN 2391801Y CN 99241149 CN99241149 CN 99241149 CN 99241149 U CN99241149 U CN 99241149U CN 2391801 Y CN2391801 Y CN 2391801Y
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- China
- Prior art keywords
- axle
- drive
- wheel
- drive shaft
- screw thread
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Abstract
The utility model discloses a back driven and two person type bicycle, which comprises a bicycle frame, wheels and a transmission mechanism. The utility model is provided with two driving axles. A second driving axle (2) is arranged in a hollow back axle (6) with movable fit. The back axle (6) is fixed on a back fork (7) of the bicycle frame by a locking mechanism. The inner circumference and the outer circumference of the back axle (6) are rotatablely matched with the second driving axle (2) and a flower plate (8) of a back wheel by a bearing structure. The second driving axle (2) drives a second driving wheel and indirectly drives a back wheel (4) by a first driving wheel. The second driving axle of the utility model is arranged on the back part to shorten the length of a bicycle body. The utility model has simple structure, light weight and convenient ride and is helpful for improving the traffic capacity of roads.
Description
The utility model belongs to the bicycle field, is specifically related to be installed on behind a kind of second axle drive shaft the rear drive tandem bicycle among the hollow rear axle.
Bicycle is one of most important invention in modern age, and it has become in people's daily life walking-replacing tool the most easily.Usually said bicycle is all single rides, though this bicycle volume is small and exquisite, rides conveniently, owing to can only a people ride, causes the increase of bicycle quantity on the road, has reduced the traffic potential of road.Existing double (or many people) is though bicycle can improve the traffic potential of road in theory.The bodywork length owing to extended on its structure, so that second axle drive shaft is installed between first axle drive shaft and rear axle, but the lengthening of vehicle body has caused the complete vehicle weight increasing, operates not nimblely, not only bad for riding on road, nor is convenient to park.The design people through long-term practice and research, has developed a kind of rear drive tandem bicycle, has solved this problem well, and has obtained satisfied result of use.
It is a kind of simple in structure that the purpose of this utility model is to provide, and volume is little, and is in light weight, flexible operation, the rear drive tandem bicycle of riding light.
The utility model is to realize like this; It is provided with two axle drive shafts, second axle drive shaft is installed among the hollow rear axle movingly, rear axle is fixed on the vehicle frame chain stay by catch gear, and the excircle of trailing wheel floral disc and hollow rear axle is by the bearing arrangement normal-running fit, and the flywheel gear of first drive system is in a side of trailing wheel floral disc; The inner periphery of second axle drive shaft and hollow rear axle is by the bearing arrangement normal-running fit, and the two ends of second axle drive shaft are fixed with the driving crank respectively.
Because the utility model has adopted the structure with the second axle drive shaft postposition, compares with existing tandem bicycle, has shortened bodywork length greatly.Not only simple in structure, and in light weight, flexible operation, it is light to ride, and is convenient to park, and also helps to improve simultaneously the traffic potential of road.
Below in conjunction with accompanying drawing and embodiment the utility model is further described, but the utility model is not limited to shown in the accompanying drawing.
Fig. 1 is the integral structure scheme drawing of existing tandem bicycle;
Fig. 2 is for driving the integral structure scheme drawing of tandem bicycle after the utility model;
Fig. 3 partly cuts open scheme drawing for the embodiment transmission device of the utility model;
Fig. 4 is that the AA of Fig. 3 is to view;
Fig. 5 is second kind of type of drive scheme drawing of transmission device of the utility model;
Fig. 6 is the third type of drive scheme drawing of transmission device of the utility model.
Fig. 1 shows the integral structure of existing tandem bicycle.The subframe of one lengthening is arranged behind its main car frame, be provided with two axle drive shafts, first axle drive shaft 1 is installed on the center tap place of main car frame, and second axle drive shaft 2 is installed between first axle drive shaft 1 and the rear axle, the center tap place of subframe.
Fig. 2 shows rear drive tandem bicycle of the present utility model.Comprise vehicle frame, wheel and transmission device, it is on the basis of single bicycle, the length of the chain stay 7 that extended slightly, retread fork 32 and recoil upper beam 33.Car load also is provided with two axle drive shafts, first axle drive shaft 1 is installed on the center tap place of vehicle frame, it drives first drive wheel 3 also by the flywheel 9 direct drive trailing wheels 4 on the trailing wheel floral disc 8, second axle drive shaft 2 is installed among the hollow rear axle 6 movingly, second axle drive shaft 2 drives second drive wheel 5 and gives first drive wheel 3 by transmission device with its transmission of power, indirectly trailing wheel 4 is produced propulsive effort.Hollow rear axle 6 is fixed on the vehicle frame chain stay 7 by catch gear; Trailing wheel floral disc 8 passes through the bearing arrangement normal-running fit with the excircle of rear axle 6, and the flywheel 9 of first drive system is installed on a side of trailing wheel floral disc 8; The inner periphery of second axle drive shaft 2 and hollow rear axle 6 is also by the bearing arrangement normal-running fit, and the two ends of second axle drive shaft 2 are fixed with respectively and drive crank 10.
By Fig. 3,4 as seen, screw thread after the utility model on two ends, the left and right sides inner periphery of axle 6 is respectively dextrorotation and derotation screw thread, two side shaft shelves 11 of second axle drive shaft 2, jam nut 12 be flush fit with it, the convex shoulder at second axle drive shaft, 2 two ends and be the roller track that constitutes ball 13 between the axle shelves 11 of bowl-type.Screw thread on two ends, the left and right sides excircle of rear axle 6 is the dextrorotation screw thread, the one end is provided with convex shoulder, constitute the roller track of ball 31 between the axle bowl 14 that the flange outer sides of the other end by axle shelves 15 and rear axle flower disc 8 inner peripherys is provided with, axle shelves 15 are locked by jam nut 16.The right-hand member of floral disc 8 is threaded with flywheel 9 as the first drive system follower by the reducer union 17 that is threaded with it.
The two ends of rear axle 6 are fastened on the chain stay 7 by pad 18, jam nut 19, and chain stay 7 inboards are pressed on respectively on jam nut 16 and the spacer 36.The afterburning crank 10 of device that the two ends of second axle drive shaft 2 are relative respectively, device two drive wheels 5 on the right-hand member crank.Device first drive wheel 3 and and follower 21 both coaxial assemblings of second drive system on first axle drive shaft 1.The right-hand member crank and second drive wheel 5 can be processed into integral structure.
As first embodiment, first, second drive system is all by chain gear.Be provided with the support 23 as the second drive system driving chain stretching device at the rear portion of chain stay 7, a upright chute 24 is arranged on the support 23, tension wheel 25 can slide or be fixed in wherein by nut 20 along chute 24.
Rear cradling 26 is installed in the top uprise of standpipe 27 of fork-shaped saddle, and uprise can be drawing formula structure or accordion structure.
Fig. 5 shows second kind of type of drive of the utility model transmission device, it is provided with a transition wheel 28 in first drive system of chain gear, second drive system is passed through gear transmission, the driven gear 29 of second drive system and transition wheel 28 coaxial rotation, its adapter shaft 34 be installed on movingly be fixed on chain stay 7 or the fork 32 that retreads on cover system 35 in.
Fig. 6 shows the third type of drive of the utility model transmission device, it can install a driven gear 30 that driven by gear 22 coaxially at the flywheel 9 in first drive system of chain gear, second drive system is passed through gear transmission, the driven gear 29 of second drive system and gear 22 coaxial rotation, its adapter shaft 34 be installed on movingly be fixed on chain stay 7 or the fork 32 that retreads on cover system 35 in.
The axle bowl of second axle drive shaft 2 of the present utility model can be designed as A type (pressing bowl) structure, Type B (spiral shell bowl) structure or C type structure etc.; Ball 13,31 can replace with ball bearing of main shaft or needle bearing, can realize the purpose of this utility model equally.
The excircle of rear axle 6 of the present utility model can not be provided with convex shoulder, and promptly two ends, the left and right sides use the positive and negative axle shelves 15 that revolve screw thread to match with the axle bowl of ball 31, floral disc 8 respectively.
Rear drive mechanism of the present utility model is not limited to said structure, can all change all axle shelves and the screw thread of jam nut into the dextrorotation screw thread, does not influence the realization of the utility model purpose.
First, second drive system of the present utility model can be arranged to left-right symmetric formula structure.
Put the beams in place 33 times in the below of the utility model first saddle, recoil and the front portion of car front handlebar can be respectively or bicycle basket is set separately.
Characteristics of the present utility model:
1, the utility model is simple in structure, compact, and volume is small and exquisite, processes easy, with low cost.
2, rear drive tandem bicycle of the present utility model is not only easy and simple to handle, and riding safety is reliable, dimension Repair, adjust and maintain all very convenient, do not need special instrument or method.
3, the single bicycle of length of wagon and same specification is suitable, is convenient to ride, turn and park at road.
4, utilize present technique can produce the tandem bicycle of multiple different size.
5, tandem bicycle of the present utility model not only can doublely be ridden, and can be changed to single bicycle of riding easily, and the follower of need second drive system and first axle drive shaft are set to clutch state and can realize.
In sum, the utlity model has the outstanding feature that is better than existing tandem bicycle, volume is little, in light weight, one car, two people ride, and reduce the quantity of bicycle on the road, help to improve the traffic potential of road, therefore promotion and implementation the utlity model has good social benefit, also will obtain considerable economic.
Claims (8)
1, a kind of rear drive tandem bicycle, comprise vehicle frame, wheel and transmission device, it is provided with two axle drive shafts, first axle drive shaft (1) drives first drive wheel (3) and drives flywheel (9) direct drive trailing wheel (4) on the trailing wheel floral disc, second axle drive shaft (2) drives second drive wheel (5) and gives first drive wheel (3) by transmission device with its transmission of power, indirectly trailing wheel (4) is produced propulsive effort, it is characterized in that: rear axle (6) is hollow, second axle drive shaft (2) is installed among the hollow rear axle (6) movingly, and rear axle (6) is fixed on the vehicle frame back vent (7) by catch gear; The excircle of trailing wheel floral disc (8) and rear axle (6) is by the bearing arrangement normal-running fit, first drive system flywheel (9) be installed on a side of trailing wheel floral disc (8); Second axle drive shaft (2) passes through the bearing arrangement normal-running fit with the inner periphery of rear axle (6).
2, rear drive tandem bicycle as claimed in claim 1, it is characterized in that: the screw thread on two ends, the left and right sides inner periphery of rear axle (6) is respectively derotation and dextrorotation screw thread, the two end axles shelves (11) of second axle drive shaft (2), jam nut (12) be flush fit with it, constitutes the roller track of ball (13) between the convex shoulder at second axle drive shaft (2) two ends and the axle shelves (11).
3, rear drive tandem bicycle as claimed in claim 1, it is characterized in that: the screw thread on two ends, the left and right sides excircle of rear axle (6) also is respectively derotation and dextrorotation screw thread, the one end is provided with convex shoulder, constitute the roller track of ball (31) between the axle bowl (14) of the other end by the flange outer sides setting of axle shelves (15) and rear axle flower disc (8) inner periphery, axle shelves (15) pass through jam nut (16) locking.
4, as claim 1,2,3 described rear drive tandem bicycles, it is characterized in that: the screw thread on the inside and outside circumference in two ends, the left and right sides of rear axle (6) is the dextrorotation screw thread.
5, as claim 1,2,3 described rear drive tandem bicycles, it is characterized in that: the right side of floral disc (8) is threaded with flywheel (9) as the first drive system follower by the reducer union (17) that is threaded with it.
5, rear drive tandem bicycle as claimed in claim 1 is characterized in that: first axle drive shaft (1) is gone up first drive wheel (3) of device and the follower (21) of second drive system, but both are coaxial and connect into clutch integral body.
6, rear drive tandem bicycle as claimed in claim 1 is characterized in that: the axle bowl of second axle drive shaft (2) can be designed as the A type, promptly press bowl structure, Type B, be spiral shell bowl structure or C type structure.
7, as claim 1,3 described rear drive tandem bicycles, it is characterized in that; The two ends excircle of rear axle (6) all is not provided with convex shoulder, by axle bowl (14) normal-running fit of axle shelves (15), ball (31) and floral disc (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241149 CN2391801Y (en) | 1999-09-16 | 1999-09-16 | Rear driven and two person type bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241149 CN2391801Y (en) | 1999-09-16 | 1999-09-16 | Rear driven and two person type bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2391801Y true CN2391801Y (en) | 2000-08-16 |
Family
ID=34028064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99241149 Expired - Fee Related CN2391801Y (en) | 1999-09-16 | 1999-09-16 | Rear driven and two person type bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2391801Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009131421A2 (en) * | 2008-04-25 | 2009-10-29 | Choi Eui Jeong | Tandem bicycle |
| WO2009145561A2 (en) * | 2008-05-27 | 2009-12-03 | Choi Eui Jeong | Two-seater bicycle |
| WO2010123166A1 (en) * | 2009-04-24 | 2010-10-28 | Choi Eui Jeong | Tandem bicycle |
-
1999
- 1999-09-16 CN CN 99241149 patent/CN2391801Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009131421A2 (en) * | 2008-04-25 | 2009-10-29 | Choi Eui Jeong | Tandem bicycle |
| WO2009131421A3 (en) * | 2008-04-25 | 2010-02-18 | Choi Eui Jeong | Tandem bicycle |
| WO2009145561A2 (en) * | 2008-05-27 | 2009-12-03 | Choi Eui Jeong | Two-seater bicycle |
| WO2009145561A3 (en) * | 2008-05-27 | 2010-03-11 | Choi Eui Jeong | Two-seater bicycle |
| WO2010123166A1 (en) * | 2009-04-24 | 2010-10-28 | Choi Eui Jeong | Tandem bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |